BEAHING Activated Carbon Dust Mask Pollution Mask Anti Pollen Allergens Face Mask Exhaust Gas Mask Filtrate Pm2.5 Mask For Running Cycling Outdoor Activities Keep Warm,Black, face mask for dust

MULTI-PURPPOSE : Mountain-biking Running Horse riding Snowboarding Skiing Speed walking Climbing Cycling Walking Motorcycling Courier Work and other outdoor activities,it also can be used haze day protection, anti-dust and so on. EASY CLEAN - The mask and valves can be washed when they get dirty,the filter is replaceable. BREATHING SMOOTH: This mask have a unique ventilation design. When exhale the valve is opened without resistance ,double air breathing valve, air resistance is smaller ,smooth breathing PROTECTIVE & WARM : activated carbon mask filters out most of exhaust ,pollen , chemicals, fumes and other irritant dusts. In the cold weather it well keep your face warm. SUIT FOR MOST PEOPLE: Made of elastic material, the size can be adjusted to meet the most head type (up to 22.4 inches).This mask can fit different sizes of face well to prevent sliding. Lightweight, adjustable and comfortable